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chromium / angle / angle / refs/heads/chromium/3446
commit95fb2a1774124cd9169ed8694071ab7a96a915a4[log] [tgz]
authorFrank Henigman <fjhenigman@chromium.org>Mon May 28 00:17:05 2018
committerCommit Bot <commit-bot@chromium.org>Wed May 30 17:12:16 2018
tree9604b20a72cb2ac21b601749968d2085f69a44ea
parent4fef7738dbdc78e19396cd1d2f666221cf8f5d4e [diff]
Add vertex formats and lookup function.

Add an angle::Format for each ES2 vertex data format.  Add function
GetVertexFormatID() to get the angle::Format for a vertex attribute.
These will be used later to support vertex formats in Vulkan (by mapping
angle::Format to Vulkan format) and to eliminate the redundant enum
gl::VertexFormatType.
No functional change.

BUG=angleproject:2405
BUG=angleproject:2531

Change-Id: I871ae23ce9fba57d90c554376e84b03f8514f7fc
Reviewed-on: https://chromium-review.googlesource.com/1044874
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
10 files changed
tree: 9604b20a72cb2ac21b601749968d2085f69a44ea
  1. build_overrides/
  2. doc/
  3. extensions/
  4. gni/
  5. gyp/
  6. include/
  7. infra/
  8. samples/
  9. scripts/
  10. src/
  11. third_party/
  12. tools/
  13. util/
  14. .clang-format
  15. .gitattributes
  16. .gitignore
  17. .gn
  18. AndroidManifest.xml
  19. AUTHORS
  20. BUILD.gn
  21. codereview.settings
  22. CONTRIBUTORS
  23. DEPS
  24. DEPS.chromium
  25. dotfile_settings.gni
  26. LICENSE
  27. OWNERS
  28. README.chromium
  29. README.md
README.md

ANGLE - Almost Native Graphics Layer Engine

The goal of ANGLE is to allow users of multiple operating systems to seamlessly run WebGL and other OpenGL ES content by translating OpenGL ES API calls to one of the hardware-supported APIs available for that platform. ANGLE currently provides translation from OpenGL ES 2.0 and 3.0 to desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Support for translation from OpenGL ES to Vulkan is underway, and future plans include compute shader support (ES 3.1) and MacOS support.

Level of OpenGL ES support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkan
OpenGL ES 2.0completecompletecompletecompletein progress
OpenGL ES 3.0completecompletein progressnot started
OpenGL ES 3.1not startedin progressin progressnot started

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkan
Windowscompletecompletecompletecompletein progress
Linuxcompletein progress
Mac OS Xin progress
Chrome OScompleteplanned
Androidcompletein progress

ANGLE v1.0.772 was certified compliant by passing the ES 2.0.3 conformance tests in October 2011. ANGLE also provides an implementation of the EGL 1.4 specification.

ANGLE is used as the default WebGL backend for both Google Chrome and Mozilla Firefox on Windows platforms. Chrome uses ANGLE for all graphics rendering on Windows, including the accelerated Canvas2D implementation and the Native Client sandbox environment.

Portions of the ANGLE shader compiler are used as a shader validator and translator by WebGL implementations across multiple platforms. It is used on Mac OS X, Linux, and in mobile variants of the browsers. Having one shader validator helps to ensure that a consistent set of GLSL ES shaders are accepted across browsers and platforms. The shader translator can be used to translate shaders to other shading languages, and to optionally apply shader modifications to work around bugs or quirks in the native graphics drivers. The translator targets Desktop GLSL, Direct3D HLSL, and even ESSL for native GLES2 platforms.

Sources

ANGLE repository is hosted by Chromium project and can be browsed online or cloned with

git clone https://chromium.googlesource.com/angle/angle

Building

View the Dev setup instructions. For generating a Windows Store version of ANGLE view the Windows Store instructions

Contributing